bio 110 lab test 1 wake tech

Which reagent was used to test for the presence of starch?

iodine

Peptides are the monomers of which macromolecule?

protein

Which one is a carbohydrate?

glucose

What is in the Positive Standard test tube for glucose?

Indicator Reagent and Glucose

What color indicates the presence of glucose?

orange

Based on the suffix, what category of macromolecule is Insulin?

protein

What is the color of the negative standard for a protein test?

light blue

Polysaccharides are the polymers of which macromolecule?

carbohydrates

Why was water used in all of the negative standards?

It has no macromolecules

In the protein test, what color indicates the presence of protein?

lavender

In science, what is the base unit of measure for weight?

gram

37 cm is equivalent to _____ km.

0.00037

A block of wood measures 5 cm long by 10 cm wide by 2 cm tall. What is its volume?

100 ml

Which glass container has volume marks on it considered accurate enough for precise measurements so is used to measure liquid volume?

a graduated cylinder

Rewrite 7.4X10^ -5 in standard form.

0.000074

True or false: The metric system (meters, grams, etc.) is more universal than the English system (yards, ounces, etc.) of measurement.

true

452 milligrams is equivalent to ____________ grams

0.452

100 grams is lighter than a kilogram.

True

How many milliliters in 5 liters?

5000

Write the number 15,300 in scientific notation

1.53x10^4

The scientific method proves things to be absolutely true.

false

Where do you dispose of broken glass?

glass disposal box

Where is the fire extinguisher in the lab?

next to the front door

Repeating an experiment is called...

replication

The effect of temperature on bacterial growth is studied. Several bacteria cultures are incubated at 0, 10, 20, and 30 degrees celsius. (Note: Bacteria can grow below 0 degrees.) Bacteria growth is then recorded. What is the dependent variable?

bacterial growth

n which group is the independent variable set to zero or an industry standard?

control group

Subjects are given an experimental sleep-aid drug to take nightly for two weeks and fill out a log in the morning of how long it took them to fall asleep, how long they slept, and to rank the quality of their sleep. They receive doses of either 0 mg, 25 mg, 50 mg, 75 mg or 100 mg of active ingredient, but neither the investigator nor the participant knows how much drug anyone received until after the experiment has concluded. Which group is the control group?

0mg

The variable in an experiment that is kept the same between treatment groups is the ___________ Variable.

standardized

The effect of watering schedule on tomato plants is studied. Several plants are watered either twice a day, once a day, once every two days or once every three days. Total weight of tomatoes are grown is used to determine the best schedule. Which variable is the independent variable?

watering schedule

Increasing the number of individual experimental units, like the number of people interviewed, refers to the ...

sample size

Enzymes are reusable

true

What suffix indicates an enzyme?

-in and -ase

Sodium hydroxide (NaOH) is _________________.

a strong base

Enzymes accelerate the rates of metabolic reactions _____________________

by physically manipulating the reactants.

_____________ speed up chemical reactions.

catalysts

Where on the enzymes do reactant molecules bind?

in the active site

What was the Rennin experiment designed to demonstrate?

The effects of temperature on enzyme activity.

HCI is ___________

a strong acid

What will almost always increase the rate of enzyme activity?

increased temperature

Another name for the reactant molecule. (The one to the left of the reaction arrow in a chemical equation.)

substrate

what is the microorganism that looks like an octopus?

hydra

what is the microorganism that looks like a round bug

Daphnia

Which lens by itself has the lowest magnification power?

scanning

Which has the greatest magnification power, a dissection microscope or a compound microscope?

compound

what are the tiny purple dots we viewed in the microscope?

cheek cells

Is paramecium a plant, animal, fungus, bacteria, or protist?

protist

Which has a cell wall?

elodea

What is the total magnification of an object when viewed with the Oil Immersion lens in working position?

1000x

What is the name of the swim hairs on Paramecium?

cilia

Which of the following lenses is not an objective lens?

ocular

Microorganisms that get their energy (food) from a living host are specifically called ________.

parasitic

Which one of the following is killed by antibiotics?

bacteria

Organisms that acquire their energy from inorganic chemical reactions are called __________.

​

chemosynthetics

In the simulated disease transmission activity, which color indicated the presence of an infection?

magenta

Most microorganisms cause some form of disease.

false

Which one of the following is related to the Antibiotic Sensitivity Test?

zone of inhibition

What is the name of the gel that had been poured in the bacteria collection plates that we used when we sampled bacteria in our environment?

agar

A rod shaped bacterium is categorized as __________.

bacillus

What is the name of the plastic container (the one with the gel on the bottom) that we are using to grow the bacteria your collected?

petri dish

What does a Gram stain tell us about a microorganism?

The type of cell wall it has.

Protein indicator reagent

Bluret (negative is blue, positive is purple)

Glucose indicator reagent

benedict's (negative is blue, positive is orange, needs heat)

starch indicator reagent

iodine (negative is brown positive gets darker)

objective lens

scanning (x4) low (x10) high (x40) Oil immersion (x100)